This guy clearly has no business in ever touching a car for clearbra install again (you may want to suggest this) and no way should you feel guilty requesting your money back.

With a little research I'm sure you'll find a quality installer. Although, there are obviously differences of opinion in clearbra vs repaint, etc, I can assure you that it's possible to get near flawless installs done that are barely noticeable yet highly protective and durable.